133893488 has 20 divisors (see below), whose sum is σ = 270698448. Its totient is φ = 64035840.

The previous prime is 133893481. The next prime is 133893497. The reversal of 133893488 is 884398331.

It is a super-2 number, since 2×133893488² = 35854932257612288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133893481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181553 + ... + 182288.

Almost surely, 2^133893488 is an apocalyptic number.

It is an amenable number.

133893488 is an abundant number, since it is smaller than the sum of its proper divisors (136804960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133893488 is a wasteful number, since it uses less digits than its factorization.

133893488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363872 (or 363866 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 133893488 is about 11571.2353705212. The cubic root of 133893488 is about 511.5873750711.

The spelling of 133893488 in words is "one hundred thirty-three million, eight hundred ninety-three thousand, four hundred eighty-eight".